Splinter, John P.
Zondervan Publishing House, 1992
Buku Referensi
Rich, Phil
John Wiley & Sons, 2000
Buku Teks
edited by Matt Bonass, Michael Rudd
Globe Law and Business, 2010
Buku Teks
ed. by Michael J. Kennish
CRC Press, 1994
Buku Referensi
McPartland, Joseph F.
McGraw-Hill, 1984
Buku Referensi